查詢結果分析
來源資料
頁籤選單縮合
題名 | 市售可樂飲料中咖啡因含量測定=Analysis of Caffeine in Commercial Cola Beverages |
---|---|
作者 | 林彰泰; 劉孟春; Lin, Chang-tay; Liu, Mon-chun; |
期刊 | 嘉南學報 |
出版日期 | 20021100 |
卷期 | 28 2002.11[民91.11] |
頁次 | 頁166-173 |
分類號 | 341.96 |
語文 | chi |
關鍵詞 | 高效液相層析法; 咖啡因; 紫外光偵檢器; HPLC; Caffeine; Cola beverages; |
中文摘要 | 本研究利用靈敏的高效液相層析法測定六種廠牌可樂飲料試樣中咖啡因的含量。以Acetonitrile-□O(10:90,v/v)為移動相,使用C-18的分離管柱及紫外光偵檢器偵測,流速為每分鐘1mL進行分離,波長分別設定為254mm及271m。實驗步驟簡單快速,其回收率分別為103.91-109.47%及94.61-105.30%。偵測結果精確,且無干擾情形。實驗結果顯示檢出含咖啡因者三件,咖啡因檢出量均符合現行用量標準;並遵守現行飲料咖啡因標示管理規定,標示於外包裝上。 |
英文摘要 | Investigation for caffeine in cola beverages were conducted by using reversed phase high performance liguid chromatography (HPLC). In the method, acetonitrile and water (10:90, v/v) as mobile phase at flow rate of 1.0mL/min were adopted. The wavelengths of detection were 254 and 271 nm. Direct quantitative analysis of cola samples were completed without any pretreatment. The recoveries were 103.91-109.47% for 254nm and 97.61-105.30% for 271nm, respectively. The results revealed that 3 samples contained caffeine and meet the hygienic standard. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。